Notice: this part has been discontinued and replaced by part MWE820A
Small and convenient USB-RS485 Converter which is port powered so there is no need for any external power supply. It has a surge and static protection of up to 600W.
This USB-RS485 converter is build around the high performance and very reliable CP2102 chip from Silicon Labs, which makes it a bit higher priced but also a very reliable converter which is is optimized and fully compatible with all versions of Windows, Linux and Mac.
This converter is suitable for most applications, including industrial, commercial and any general office computer device. It is a bi-directional, (meaning it communicates in both directions), reliable and cost-effective converter that easily lets you connect any RS485 device directly to your computer's USB port, efficiently converting USB signals to half-duplex RS485 and vice versa.
This high performance USB-RS485 converter is powered from the USB port so no external power supply is needed.
The RS485 end is a standard 4-screw terminal header for easy connection of single wires.
Automatic send data control is enabled by default so no external flow or handshake control is required.
It can be used in point to point or point to multipoint networks with up to 32 nodes. The estimated communication distance is up to 9800 FT (3km) at 4800bps, 6500 FT (2km) at 9600bps or 3200 FT (1km) at 115.2Kbps.
Overall features
- USB port-powered USB-RS485 Converter
- Indication lights for RX and TX
- Output 1: RS485 2 wire half duplex
- Up to 32 nodes in network configuration
- Surge and static electrical protection up to 600W
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Resources
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| SPECIFICATIONS |
| Part number |
US485MIO |
| Operating system |
- Windows 8.1 / 8 (32/64-bit), Windows 7 (32/64-bit), Vista (32/64-bit), XP, Server 2003, 2000, ME, 98Se (all WHQL compliant)
- Linux 2.6.x, 3.x.x
- Mac OS X 10.4, 10.5, 10.6, 10.7 and 10.8.
- Windows CE 5.0, 6.0
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| Processor |
Silicon Labs CP2102 |
| RS485 output power |
4.40VDC (between Data and GND) |
| RS485 / RS422 Interface |
Screw terminal block |
| Fail-safe bias resistors |
Yes |
| Signals |
RS485, 2-wire half duplex: D+, D-, GND |
| Compatible with |
Modbus RTU/ASCII, BACnet |
| Bias resistors |
Yes |
| USB interface |
Standard Type B Female |
| Indication LEDs |
Power, Send and Receive |
| Baud rate |
300 to 921600bps |
| Parity |
None, Odd, Even, Mark, Space |
| Data Bits |
5, 6, 7, 8 |
| Stop Bits |
1, 1.5, 2 |
| TX / RX buffer size |
640 byte transmit buffer, 576 byte receive buffer |
| Flow Control |
Hardware or Xon / Xoff |
| COM port accessible by |
Included virtual COM port drivers |
| Special features |
- Event character support
- Line break transmission
- Automatic Send Control |
| Electrostatic (ESD) protection |
15KV/ 600W/ms high voltage protection |
| Current draw |
Static: less than 80mA. Dynamic average: less than 150mA |
| Dimensions |
65 x 22 x 12mm |
| Interface compliance |
USB1.1, 2.0, 3.0, EIA/TIA RS-232 |
| Regulatory compliance |
FCC, CE and RoHS |
| Working temp |
-20 to 70C |
| Warranty |
1 year limited warranty |
For alternative USB to serial RS485 and RS422 solutions please see our full selection of USB to Serial RS485 converters
Quick Tip!
A USB-RS485 Converter with only one purpose.
This USB-RS485 Converter is designed around the high quality CP2102 processor ship from Silicon Labs. The advantage of this processor is that it is made in particular for converters like this USB-RS485 converter. This means that when you use this converter you no only have a high quality converter you also have a product which is actually designed for converting only USB to serial RS485 data.
Some processors are designed with not only RS485 conversion in mind but also RS422 and RS232 and can be used for several different applications, however most of them with less precision and reliability due to the multi-level design. With this USB-RS485 converter you get exactly what you need and nothing else, which is what makes this USB-RS485 converter highly reliable and gives you the results you need with an extremely low error rate.
For alternative serial solutions please see our selection of USB to RS485 converters.
